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Current system
10116+1321
HU 874
34 Leo


Nearby doubles
12' : 10110+1328
AHD 36

36' : 10114+1246
SLW 443

54' : 10150+1300
SLW 451

55' : 10117+1416
LDS3962

58' : 10088+1401
BPMA 40

62' : 10095+1229
DAM2070

69' : 10102+1217
HEI 354

71' : 10138+1425
SLW 447

76' : 10096+1212
DAM2072

80' : 10106+1204
LDS3960

82' : 10171+1309
JMS 2AB

85' : 10143+1207
HDS1474

86' : 10157+1424
HJ 155

88' : 10085+1206
BRT1267

89' : 10086+1205
DAM2042

92' : 10130+1151
DAM2140

94' : 10115+1148
DAM2110

95' : 10174+1239
CVR 555

95' : 10071+1214
OSW 52

97' : 10084+1158
STFB 6AB
Regulus

97' : 10080+1201
DAM2032

97' : 10132+1147
HEI 355

103' : 10152+1153
HU 1254AB

103' : 10123+1143
J 2074AB

105' : 10139+1501
GWP1313

106' : 10160+1200
HJ 156AB



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

10116+1321 HU 874 (34 Leo)

 
 
10h 11m 38.19s +13° 21' 18.7" P.A. 274.00 sep 0.0 mag 6.90,7.87 Sp F6V dist. 64.6 pc (210.73 l.y.)
 
 
Coord 2000 10116+1321 Discov num HU  874 Comp Coord arcsec 2000 10 11 38.19 +13 21 18.7
Date first 1905 Date last 2023 Obs 79
Pa first 289 Pa last 274.3 P.A. Now (θ) 281.6° (calc)
Sep first 0.2 Sep last 0.048 Sep. Now (ρ) 0.145" (calc)
Mag pri 6.90 Mag sec 7.87 delta mag (ΔM) 0.97 Spectral class F6V (yellow-white)
Pri motion ra +034 Sec motion ra
Pri motion dec -038 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 34 Leo Constellation Leo SAO 98991 HIP 49929
Tycho2 0836-01522-1 Gaia DR2 3881744167420534528 HD 88355 HR 3998
GC 13999 ADS 7674 BD BD+14 2217 Flamsteed 34 Leonis
Flamsteed name 34 Leo Distance 64.6 Distance ly 210.73
 
 
ORBITAL ELEMENTS
 
 
Period (P)17.974y± 0.03 Periastron (T)2003.81y± 0.09 Semi-major axis (a)0.1528a± 0.0055
Eccentricity (e)0.928± 0.006 Inclination (i)82.4°± 0.8 Longitude of periastron (ω)317.9°± 2.6
Node (Ω)111.6°± 0.6 Notesn ReferenceTok2020e
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 287.3 0.198
2001 287.9 0.175
2002 288.8 0.142
2003 290.6 0.090
2004 131.4 0.012
2005 271.4 0.042
2006 277.8 0.083
2007 280.2 0.116
2008 281.6 0.144
2009 282.5 0.168
2010 283.3 0.187
2011 283.9 0.202
2012 284.4 0.214
2013 284.9 0.221
2014 285.3 0.226
2015 285.8 0.226
2016 286.3 0.221
2017 286.7 0.212
2018 287.3 0.197
2019 288.0 0.175
2020 288.9 0.141
2021 290.6 0.088
2022 136.0 0.011
2023 271.7 0.043
2024 277.9 0.084
2025 280.3 0.117
2026 281.6 0.145
2027 282.5 0.168
2028 283.3 0.187
2029 283.9 0.202
2030 284.4 0.214
2031 284.9 0.222
2032 285.4 0.226
2033 285.8 0.226
2034 286.3 0.221
2035 286.8 0.212
2036 287.3 0.197
2037 288.0 0.174
2038 288.9 0.140
2039 290.7 0.086
2040 141.4 0.010
2041 272.0 0.044
2042 278.0 0.085
2043 280.3 0.118
2044 281.6 0.146
2045 282.6 0.169
2046 283.3 0.188
2047 283.9 0.203
2048 284.4 0.214
2049 284.9 0.222
2050 285.4 0.226


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10116%2B1321c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 10116+1321 HU 874 (34 Leo) : NOTES
 
 
discov_num notes refcode
HU 874 Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 2.39 +/- 0.53, 2.82, and 1.17 Msun, respectively. Mlk2012
Ma,Mb = 1.682 +/- 0.042, 1.381 +/- 0.032 \msun. GmJ2022
 
 
REFERENCES
 
 
refcode metd author reference
GmJ2022 orb j Gomez, J., Docobo, J.A., Campo, P.P., Andrade, M., Mendez, R.A. & Costa, E. 2022MNRAS.509.4229G
GmJ2022 +not MNRAS 509, 4229, 2022
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb
 
 
DISCOVERER
 
 
discov author
GMJ Gomez, J., Docobo, J.A., Campo, P.P., Andrade, M., Mendez, R.A. & Costa, E.
TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK Martinez, M., & Mondaca, E.
TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK Tokovinin, A. & Briceno, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
10116+1321 HU 874 2006 59 277 0.1 6.90 7.87 F6V +14 2217 NOD 101138.19+132118.7
10116+1321 HU 874 2009 60 283 0.2 6.90 7.87 F6V +14 2217 NOD 101138.19+132118.7
10116+1321 HU 874 2014 67 285 0.2 6.90 7.87 F6V +14 2217 NO 101138.19+132118.7
10116+1321 HU 874 2018 71 288 0.2 6.90 7.87 F6V +14 2217 NO 101138.19+132118.7
10116+1321 HU 874 2019 75 288 0.2 6.90 7.87 F6V +14 2217 NO 101138.19+132118.7
10116+1321 HU 874 2021 78 291 0.1 6.90 7.87 F6V +14 2217 NO 101138.19+132118.7
10116+1321 HU 874 2023 79 274 0.0 6.90 7.87 F6V +14 2217 NO 101138.19+132118.7

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 10116+1321 HU 874 (34 Leo) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10116+1321 HU 874 (34 Leo) : MEASURES
 
 
No records found.

 
 
WDS 10116+1321 (34 Leo) : VIRTUAL EYEPIECE
 
 

10116+1321 HU 874A mag 6.9 Sp F6V 10116+1321 HU 874B mag 7.87 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 10116+1321 (34 Leo) : ALADIN DSS IMAGE @ 10h 11m 38.19s +13° 21' 18.7"
 
 
 
 
WDS 10116+1321 HU 874 (34 Leo) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10116+1321 HU 874 distance=0' 10110+1328 AHD 36 distance=12' 10114+1246 SLW 443 distance=36' 10150+1300 SLW 451 distance=54' 10117+1416 LDS3962 distance=55' 10088+1401 BPMA 40 distance=58' 10095+1229 DAM2070 distance=62' 10102+1217 HEI 354 distance=69' 10138+1425 SLW 447 distance=71' 10096+1212 DAM2072 distance=76' 10106+1204 LDS3960 distance=80' 10171+1309 BOY 4Aa,Ab distance=82' 10171+1309 JMS 2AB distance=82' 10143+1207 HDS1474 distance=85' 10157+1424 HJ 155 distance=86' 10085+1206 BRT1267 distance=88' 10086+1205 DAM2042 distance=89' 10130+1151 DAM2140 distance=92' 10115+1148 DAM2110 distance=94' 10174+1239 CVR 555 distance=95' 10071+1214 OSW 52 distance=95' 10084+1158 HDO 127BC distance=96' 10084+1158 HDO 127BD distance=96' 10084+1158 STFB 6AB (Regulus) distance=97' 10084+1158 HDO 127AD (Regulus) distance=97' 10080+1201 DAM2032 distance=97' 10132+1147 HEI 355 distance=97' 10152+1153 HU 1254AB distance=103' 10152+1153 DAM2188AB,C distance=103' 10123+1143 J 2074AB distance=103' 10123+1143 J 2074AC distance=103' 10139+1501 GWP1313 distance=105' 10160+1200 HJ 156AB distance=106' 10160+1200 ABH 74AD distance=106' 10160+1200 HJ 156AC distance=106' 10160+1200 HJ 156BC distance=106' 10173+1210 J 1126 distance=109' 10135+1136 GOM 10 distance=109' 10193+1318 GWP1345BC distance=111' 10193+1318 GWP1345AB distance=113' 10166+1155 LAS 15 distance=114' 10199+1327 HJ 158 distance=121' 10083+1131 TDS7052 distance=121' 10093+1122 GWP1303 distance=125' 10111+1531 A 2368 distance=131' 10028+1339 SLW 426 distance=131' 10160+1123 GWP1333 distance=135' 10022+1334 GRV 808 distance=138' 10199+1217 FAR 12 distance=138' 10164+1529 GWP1335 distance=146' 10019+1354 BPM 568 distance=146' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 10116+1321 HU 874 274 0.0 0
Show 10110+1328 AHD 36 118 14.7 12
Show 10114+1246 SLW 443 100 100.8 36
Show 10150+1300 SLW 451 176 152.3 54
Show 10117+1416 LDS3962 170 4.6 55
Show 10088+1401 BPMA 40 294 231.5 58
Show 10095+1229 DAM2070 13 6.8 62
Show 10102+1217 HEI 354 230 4.0 69
Show 10138+1425 SLW 447 310 158.5 71
Show 10096+1212 DAM2072 136 2.5 76
Show 10106+1204 LDS3960 47 7.6 80
Show 10171+1309 BOY 4 Aa,Ab 301 0.1 82
Show 10171+1309 JMS 2 AB 117 124.6 82
Show 10143+1207 HDS1474 296 0.9 85
Show 10157+1424 HJ 155 148 14.2 86
Show 10085+1206 BRT1267 0 3.8 88
Show 10086+1205 DAM2042 259 6.5 89
Show 10130+1151 DAM2140 208 5.0 92
Show 10115+1148 DAM2110 70 9.9 94
Show 10174+1239 CVR 555 108 12.1 95
Show 10071+1214 OSW 52 236 67.1 95
Show 10084+1158 HDO 127 BC 94 2.1 96
Show 10084+1158 HDO 127 BD 211 109.1 96
Show Regulus 10084+1158 STFB 6 AB 308 175.9 97
Show Regulus 10084+1158 HDO 127 AD 274 195.3 97
Show 10080+1201 DAM2032 178 4.4 97
Show 10132+1147 HEI 355 205 0.3 97
Show 10152+1153 HU 1254 AB 15 0.6 103
Show 10152+1153 DAM2188 AB,C 134 17.2 103
Show 10123+1143 J 2074 AB 12 2.2 103
Show 10123+1143 J 2074 AC 207 28.8 103
Show 10139+1501 GWP1313 245 12.6 105
Show 10160+1200 HJ 156 AB 224 18.7 106
Show 10160+1200 ABH 74 AD 210 62.3 106
Show 10160+1200 HJ 156 AC 316 22.9 106
Show 10160+1200 HJ 156 BC 354 30.2 106
Show 10173+1210 J 1126 307 2.3 109
Show 10135+1136 GOM 10 310 12.9 109
Show 10193+1318 GWP1345 BC 207 83.0 111
Show 10193+1318 GWP1345 AB 308 122.5 113
Show 10166+1155 LAS 15 320 3.4 114
Show 10199+1327 HJ 158 153 23.2 121
Show 10083+1131 TDS7052 294 2.3 121
Show 10093+1122 GWP1303 64 16.5 125
Show 10111+1531 A 2368 166 0.8 131
Show 10028+1339 SLW 426 172 22.8 131
Show 10160+1123 GWP1333 212 9.6 135
Show 10022+1334 GRV 808 70 34.6 138
Show 10199+1217 FAR 12 338 50.2 138
Show 10164+1529 GWP1335 187 91.7 146
Show 10019+1354 BPM 568 172 77.2 146

 
 
WDS 10116+1321 : COMPONENTS
 
 
  A
B pa=274.3°
sep=0.05"
 
 
10116+1321 A
 
 
Name 34 Leo Coord arcsec 2000 101138.19+132118.7 Mag 6.9 Spectral class F6V (yellow-white)
PmRA 34.00 PmDE -38.0 HIP 49929 Tycho2 0836-01522-1
HD 88355 HR 3998 GC 13999 BD BD+14 2217
Flamsteed 34 Leonis Flamsteed name 34 Leo
Tycho2
Tycho2 0836-01522-1 Pflag RAmdeg 152.90921195 DEmdeg 13.35511661
PmRA 37.8 PmDE -35.2 E RAmdeg 4 E DEmdeg 4
E pmRA 0.8 E pmDE 0.8 EpRAm 1991.32 EpDEm 1991.21
Num 20 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 1.0 BTmag 6.980 E BTmag 0.015 VTmag 6.481
E VTmag 0.010 Prox 999 TYC T HIP 49929
CCDM AB RAdeg 152.90912333 DEdeg 13.35519833 EpRA 1990 1.78
EpDE 1990 1.64 E RAdeg 3.8 E DEdeg 4.3 Posflg P
Corr 0.3
Hipparcos
Catalog H HIP 49929 Proxy H RAhms 10 11 38.19
DEdms +13 21 18.7 Vmag 6.43 VarFlag R Vmag G
RAdeg 152.909 DEdeg 13.3552 AstroRef * Plx 14.49
CCDM 38.83 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 282 Rho 0.158 HD BD BD+14 2217
CD CP Dm number +14 2217 VIred 0.53
SpType F7V R SpType Coord arcsec 2000 101138.19+132118.7
Hipparcos 2
HIP 49929 Sn 55 So 3 Nc 2
RArad 2.6687675408 DErad 0.233092279 Plx 15.48 PmRA 39.26
PmDE -37.33 E RArad 0.68 E DErad 0.42 E Plx 0.72
E pmRA 0.77 E pmDE 0.39 Hpmag E Hpmag 0.0012
SHp 0.008 VA 0 BV 0.468 E BV 0.014
VI 0.53
CCDM
Ccdm 10116+1321 RComp Comp A Note1
Note2 Discov num DRAs 2.15 DDEs 18.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.8 Sp F5 PmNote *
PmRA 21 PmDE -42 Dm number +14 2217 Cat1 BD
Name2 +13 1023 Cat2 AGK2/3 HD 88355 M HD
ADS BDS A 7674 M ADS BDS N IDS IDS 10063N1351A
HIC 49929
 
 
10116+1321 B
 
 
Coord arcsec 2000 101138.19+132118.7 Mag 7.87 Delta magnitude 0.97 Coordinate calculated yes
CCDM
Ccdm 10116+1321 RComp Comp B Note1 *
Note2 Discov num HU 874 DRAs DDEs
R dRAs Year 1960 Theta 286 Rho 0.2
Obs 16 Vmag 7.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7674 M ADS BDS N N IDS IDS 10063N1351B
HIC 49929